Improved device for casting stereotype-plates



UNITED STATES gPATENT .Price W. F. DRAPER, ANDOVER, MASSACHUSETTS.

Specification formingpart of Letters Patent No. 51,437, dated December12, 186:3.

To all who-m it may concern:

Be it known that` I, W. F. DRAPER, of Andover, in the county of Essex'and State'of Massachusetts, have invented a new and. improved Device forCasting Stereotype-Plates 5 and Ido hereby` decl-are that the followingis a full, clear and vexact description thereof, which will enableothers skilled inthe art to make and use the same reference heilig hadto the accompanying' drawings, forming part of this specification inwhich- Figure. 1 is a side`view of my invention; Fig. 2, a plan or topview of the same; Fig; 3, a transverse vertical section of the saure,taken in the line a: as, Fig. 1.

Similar .letters of reference indiate like part-s.

In the method of making er casting stereotype-plates, known as the clayprocess,a mold or matrix is tirst made hy spreading a putty .orcomposition of clay and other ingredients upon. a .metallic plate,as'iron,`and taking anv impression ot' .the type by pressing the moldupon` it. In order to obtainastereotype-plate from 'this mold, the plateis heated till, the mold is dry. .A wire bent to form three sides ofapara]lelogram,- is then laid around the mold on the plate, another.`plate is placed on the top of the wire, andall are held lirmly togetherby clamps o1; other devie, and, being set on edge, the space between theplates made bythe wire is filled with melted metal which, when properlycooled, forms the stereotype- -plate.

vThe object of my invention is, first; to hold the plates firmlytogether in contact, with the wire o1' other equivalent device, and,second, to facilitate the turning of the plates on edge orat any desiredinclination for casting, and, ird, to allow the free application ofwater tothe plates and tlow of the same from them in the process ofcooling. y

To this end'the invention consists of a frame having .an open bedfurnished withsnarrow'or toothed bearings, and .au open platen, also,

having narrow or toothed hearings, all ar- V ranged as hereinafter setforth.

A represents whatI term an open bed.-1 cast with a suitable frame, B,composed of a bar,

a, underneath, two side hars, b b, and a baise, above. (See Fig. 1.) Thebed'A is -provided with teeth or-narrow projections d-on which a plate,C, rests. I

D represents-a platen which is of open or skeleton form, and is providedwith end pieces, e e, which have pins fin their ends, said pins beingfitted i'ii grooves in the inner surfaces of the side bars, b b. Thisplaten is also provided with teeth or narrow projections d', againstvwhich anotherplate, C', similar to C leans, the 4wire E referred to in`the preamble heilig between the two plates,.and theplates and wireheilig held closely together in contact hy ascrew, F, which works inafeniale,

thread or nut g,'at the centre of har c.`

The plate Gis supported .by a wire or rod h, extending fromthe centre ofthe bar a. The bars d d of the -frame B are e'ach provided with ajournal, i, and the frame is snspended on these journals over awater-trough, G, as shown in Fig. 3.

By this arrangement it will beseen that the',

plates may he turned up endwise, or to any degree of inclination toreceive the melted" metal between them, thefraine and plates heilig heldin position by a screw,j, or other device. The teeth or narrowprojections or bearings d d ot' the bed 'apri platen serve .topreventthe heat being conducted too rapidly off from the melted metalduring the process of casting. The water, also, for cooling the plate,after being cast, may he readily 'applied to the plate, and the water isallowed to tlow freely therefrom.

I claim. as new, and-l desire to secure by lLetters Patent- 'lhearrangement of the hed A, the frame B, jonrnaled on 'centers', theplaten D, plates C U', and screw F, .operating substantially as and forthe purpose described.

- W. F. DRAPER. Witaessesn'.

STEPHEN Beams, C. G. WARREN.

